Long-Term Radiation Exposure From Space Travel Harms Memory, Mood
Long-Term Radiation Exposure From Space Travel Harms Memory, Mood, D-brief,
Researchers also know that short, powerful doses of radiation are deadly. But less is known about long-term, low-dose radiation — the kind that settlers on Mars or the moon would face.
Now, a team of scientists led by Charles Limoli at the University of California, Irvine, has taken a step toward a better understanding of those long-term risks. The researchers exposed mice to chronic, low-dose radiation for six months. The results are troubling for the future of spaceflight. The radiation left the mice suffering from both memory and mood problems that the scientists say would likely show up in human subjects as well. The results were published Monday in the journal eNeuro.
Radiation on the Brain
In the study, the mice showed “severe impairments in learning and memory,” according to the research paper. The mice were also generally more stressed out by their environments. That isn’t a good sign for space settlers, who will need their wits to face unforeseen struggles. Other studies have also already shown the potential ill effects of the long-term isolation and stress.
In the past, scientists hit lab mice with radiation levels some 100,000 times higher than they’d actually experience on Mars’ surface. But the researchers say their test is the first that has used these lower, more realistic doses of radiation over long periods to study space travel. Their efforts were made possible by a new facility.
The radiation included both neutrons – heavy particles from atomic nuclei – and pure energy in the form of gamma rays and other scattered photons……
Researchers found both physical and chemical changes in the brains they examined, in addition to the behavioral changes they observed in the living mice……..
more tests need to be done, and the radiation, while more realistic than past experiments, still doesn’t exactly mimic the space environment. But if their results hold up, they’re not a good sign for the future of human space settlement, at least not without a lot of bulky and expensive radiation shielding. http://blogs.discovermagazine.com/d-brief/2019/08/05/long-term-radiation-exposure-from-space-travel-harms-memory-mood/#.XUionm8zbIU
No comments yet.
1.This month
International Uranium Film Festival Berlin 2022 Friday, October 7th 2022 – Zeiss Large Planetarium
8.30 p.m TOTEM & ORE
Australia, 2019, Director & Producer: John Mandelberg, Executive Producer: Bozic Wongar,Actress and speaker: Ursula Yovich, documentary, with German subtitles, 97 min.
German premiereThe film begins in 1945 with the atomic annihilation of Hiroshima and ends with the Fukushima meltdown in 2011. It examines the aftermath of atomic bombs, nuclear weapons tests and the Fukushima reactor accident. Radioactive fallout from the British nuclear tests in the 1950s and 1960s at Emu Field and Maralinga in South Australia not only contaminated large parts of the Australian outback. Radioactive rain also reached cities like Adelaide. Above all, however, the Aborigines have suffered from this to this day.
“Totem & Ore” tells the historical tragedies and fears from the point of view of witnesses of the atomic bombing and atomic bomb tests. Indigenous people, activists, filmmakers, artists, actors, writers, composers, doctors and professors all have their say. Ursula Yovich, a Native American actress, appeals: “There must be no more place in the world for nuclear weapons!”
Totem & Ore received a special recognition from the 2022 International Uranium Film Festival
National anti-AUKUS Coalition website
https://antiaukuscoalition.org/ National day of action planned for September 16
FIFTY SHADES OF TRUTH – the Grayzone
Max Blumenthal & Aaron Mate slam corporate media disinfo at Collision Toronto
Antinuclear 
Leave a Reply